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All results from a given calculation for CHOOCHO (diformyl ether)

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-302.614100
Energy at 298.15K 
HF Energy-301.603382
Nuclear repulsion energy160.327666
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3080 2948 55.81      
2 A1 1949 1866 25.38      
3 A1 1478 1415 0.07      
4 A1 1188 1137 105.03      
5 A1 558 534 0.79      
6 A1 289 277 14.83      
7 A2 1047 1002 0.00      
8 A2 178 171 0.00      
9 B1 1055 1009 0.01      
10 B1 128 122 5.08      
11 B2 3057 2926 1.50      
12 B2 1872 1791 712.76      
13 B2 1419 1358 14.80      
14 B2 1145 1095 684.83      
15 B2 725 694 44.95      

Unscaled Zero Point Vibrational Energy (zpe) 9583.6 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 9171.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/aug-cc-pVTZ
ABC
1.63539 0.08744 0.08301

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.390
C2 0.000 1.168 -0.319
C3 0.000 -1.168 -0.319
O4 0.000 2.222 0.220
O5 0.000 -2.222 0.220
H6 0.000 1.025 -1.406
H7 0.000 -1.025 -1.406

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.36651.36652.22832.22832.06792.0679
C21.36652.33611.18383.43251.09642.4473
C31.36652.33613.43251.18382.44731.0964
O42.22831.18383.43254.44372.01943.6311
O52.22833.43251.18384.44373.63112.0194
H62.06791.09642.44732.01943.63112.0494
H72.06792.44731.09643.63112.01942.0494

picture of diformyl ether state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 O4 121.636 O1 C2 H6 113.752
O1 C3 O5 121.636 C2 O1 C3 117.472
O4 C2 H6 124.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability